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Chromogenic film with concave-convex structure, pressure test film and preparation method thereof
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A technology of concave-convex structure and pressure testing, applied in hydraulic/pneumatic metering, devices for coating liquids on surfaces, protein coatings, etc.
Active Publication Date: 2022-03-29
BAODING LUCKY INNOVATIVE MATERIALS
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Therefore, it is difficult to perform pressure testing with high sensitivity in the case of testing small pressures using a pressure testing membrane
Method used
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[0078] Add 20kg of epoxyacrylate to 40kg of urethane acrylate, stir evenly, then add 25kgPET3A and 15kg DPHA in turn, after stirring evenly, add 3kg184 and 3kgTPO, stir well and prepare the concave-convex structure layer slurry for use.
[0079] Preparation of microcapsules and their dispersions
[0117] Add 20kg epoxy acrylate to 40kg urethane acrylate, stir evenly, then add 22kgPET3A and 18kgDPHA in turn, after stirring evenly, add 3kg 907 and 3kg TPO, stir well and prepare the concave-convex structure layer slurry for use.
[0118] Preparation of microcapsules and their dispersions
[0156] Add 20kg of epoxy acrylate to 40kg of urethane acrylate, stir evenly, then add 25kgTPGDA and 15kgDPHA in turn, after stirring evenly, add 3kg 184 and 3kg TPO, stir well and prepare a concave-convex structure layer slurry for use.
[0157] Preparation of microcapsules and their dispersions
[0164] Add 1.5kg of CVL and 1.2kg of BLMB into 60kg of 1-phenyl-1-dimethylphenylethane and 5kg of methyl ethyl ketone, stir ...
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Abstract
The present disclosure relates to a chromogenic film and a pressure test film, the chromonic film comprising: a substrate on which other layers are coated to form a chromonic film; a concavo-convex structure layer formed on the substrate; and a chromonic film layer, which is coated on the concave-convex structure layer and contains microcapsules, which contain electron-donating leuco dye precursors, and the electron-donating leuco dye contacts electron-accepting compounds to be colored, wherein when the color develops When the film is pressed, the concave-convex structure layer presses the chromogenic layer, so that the microcapsules in the chromogenic layer are broken and released to the electronic leuco dye precursor. The chromogenic membrane realizes the narrowing and concentrating of the pressure-receiving area of the pressure-testing membrane and the actual pressure-receiving area of the microcapsules through the concave-convex structure layer, so even if a small pressure is applied to the pressure-testing membrane, the high sensitivity of the pressure-testing membrane can be realized.
Description
technical field [0001] The disclosure relates to a chromogenic film, a pressure test film and a preparation method thereof, in particular to a chromogenic film with a concave-convex structure layer, a pressure test film and a preparation method thereof. Background technique [0002] Pressure testing is mainly used in the lamination of printed circuit boards, confirmation and adjustment of pressure between rollers, lamination of liquid crystal glass panels, assembly of engine cylinders and other production and processing processes that have strict requirements on pressure. Pressure testing is usually performed with a pressure tester, but this pressure testing method is complicated to operate, has hysteresis in measurement results, poor test accuracy and sensitivity, and is only suitable for pressure testing in small areas, not suitable for online pressure monitoring, and not suitable Stress tests with specially shaped regions. [0003] To facilitate these pressure testing ap...
Claims
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